A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5945-01-211-6585
NSN 6145-00-437-8960
NSN 5905-01-519-2725
NSN 5985-01-196-5263
NSN 7035-01-287-9817
NSN 5996-00-377-9464
NSN 5915-01-005-0164
NSN 5996-01-217-3670
NSN 5975-01-130-7360
NSN 5855-01-396-0258
NSN 6645-01-044-6376
NSN 6320-00-682-3448